This item is for indoor use only. It is strongly recommended to change your current electronic 12V transformers to LED drivers when thinking of converting to LEDs. Several LED bulbs can be run with one LED driver. 

Features: 
LED driver transformer for MR11/G4/MR16/GU5.3 12V LED bulbs. 
Designed to achieve the optimum life for 12V LEDs. 
Input Voltage: AC 100-240V, 50/60Hz. 
Output Voltage: DC 12V. 
Short circuit and overload protection. 

Specifications: 
Max. Power: 12W / 24W (Optional) 
Input Voltage: AC100-240V 50/60Hz 
Input Current: 12W: 0.2A; 24W: 0.6A  
Output: 12W: DC 12V 1A; 24W: 12V 2A 
Max. Case Temperature: 80°C 
Max. Ambient Temperature: 40°C 
Product Size:  
12W: 75 * 38 * 22mm / 2.95 * 1.5 * 0.86in 
24W: 93 * 43 * 22mm / 3.66 * 1.7 * 0.86in 
Product Weight: 45~71g / 1.58~2.51oz 
Package Size:  
12W: 8 * 4 * 2.5cm / 3.15 * 1.57 * 0.98in 
24W: 10 * 5.5 * 2.5cm / 3.94 * 2.16 * 0.98in 
Package Weight: 53~82g / 1.9~2.91oz 

Package List: 
1 * LED Driver Transformer 
4 * Screws